Publications [#269764] of David R. Smith

Papers Published
  1. Driscoll, T; Lipworth, G; Hunt, J; Landy, N; Kundtz, N; Basov, DN; Smith, DR, Performance of a three dimensional transformation-optical-flattened Lüneburg lens., Optics Express, vol. 20 no. 12 (June, 2012), pp. 13262-13273 [22714354], [doi] .

    We demonstrate both the beam-forming and imaging capabilities of an X-band (8-12 GHz) operational Lüneburg lens, one side of which has been flattened via a coordinate transformation optimized using quasi-conformal transformation optics (QCTO) procedures. Our experimental investigation includes benchmark performance comparisons between the QCTO Lüneburg lens and a commensurate conventional Lüneburg lens. The QCTO Lüneburg lens is made from a metamaterial comprised of inexpensive plastic and fiberglass, and manufactured using fast and versatile numerically controlled water-jet machining. Looking forward towards the future and advanced TO designs, we discuss inevitable design trade-offs between affordable scalable manufacturing and rigorous adherence to the full TO solution, as well as possible paths to mitigate performance degradation in realizable designs.